Check the listing for details. New Evercool Twister Black 3.5" Front Panel Bay or PCI Slot Fan Speed Controller. Condition: New. Listed at 16.00 USD. We are closed on Saturdays and Sundays. NEW Evercool Twister Manual PC Fan Speed Controller for 3-pin Cooling Fan Model: SCB-CD2 Features: •Controller can be placed in the front 3.5¨ panel or on PCI card slot • Fan speed can be easily adjusted by turning the control knob. • Suitable for all types of DC fans. Panel :3.5"PCI Slot Overall Dimension: 101x25x90mm 120x24x45mm Best Material : Aluminum Steel Screws : 4 1 Voltage : 12V Output Voltage:5.5~10.5V Installation: 3.5" Front Panel Installation Guide Place Twister into the 3.5" front panelScrew the two side screws in placeConnect the housing of the fan to Twister then connect the housing of Twister to finished motherboardDonePCI Slot Panel Installation Guide:Change the bracket then screw itScrew the Twister in PCI slotConnect the housing of the fan to Twister then connect the housing of Twiser to finished motherboardDone Store Policy & About us (More on Shipping/ Return Policy / None-USA International Customers)